10-25-2011
• Cnet
Bitcoins aren't just an abstract financial instrument living somewhere in the digital ether anymore. They're now a physical currency capable of taking a ride in your pocket or scratching off your lottery tickets.
The physical Bitcoins, called Casascius Bitcoins and created by a guy in Utah named Mike Caldwell, are made of brass, with gold electroplating on the 25 Bitcoin denomination. And, of course, they're tied to the peer-to-peer, open-source digital currency that's been exchanged on the Internet for a while now.